Celestron 11" RASA11 V2 Optical Tube Assembly, CGE Dovetail (91076)
$4,399.99
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Celestron 11" RASA11 V2 Optical Tube Assembly, CGE Dovetail (91076)
$4,399.99
Ultra-Fast Optics
f/2.2 Focal Ratio Exposure
11-Inch Aperture
279mm Light Gathering Power
Stable Focusing
Ultra Stable Focus System
Large Image Circle
43.3mm Sensor Coverage Field
Active Cooling
12V DC MagLev Fan
Rare-Earth Optics
4 Element Chromatic Correction
Fast Deep-Sky AstroimagingCapture Stunning Deep Space Wonders
The Celestron 11" Rowe-Ackermann Schmidt Astrograph (RASA 11) V2 is an ultra-fast f/2.2 optical tube assembly engineered to capture breathtaking deep-sky astrophotography in a fraction of standard exposure times. Featuring a wide 43.3mm image circle and rare-earth optical glass, this advanced deep-sky astrograph telescope provides razor-sharp star images across large-format sensors without requiring long tracking exposures.
Unmatched Optical EngineeringState of the Art Astrophotography Performance
Designed for serious astrophotographers, the Celestron 11" Rowe-Ackermann Schmidt Astrograph (RASA 11) V2 features a 4-element rare-earth glass system that completely eliminates false color, coma, and field curvature. Equipped with Celestron's innovative Ultra-Stable Focus System (USFS), this optical tube assembly prevents unwanted mirror shift and mirror flop during imaging sessions. Additionally, an integrated 12V DC MagLev cooling fan rapidly brings the 279mm primary mirror to thermal equilibrium, ensuring optimal performance for top DSLR and astronomical cameras.
Technical SpecificationsDetailed Telescope Performance and Dimensions
Optical Design
Rowe-Ackermann Schmidt Astrograph
Aperture
279mm (11") (aperture)
Focal Length
620mm (24.4") (ruler)
Focal Ratio
f/2.2
Image Circle
43.3mm (1.7") Ø (camera)
Useable Field
52mm (2.04") Ø (expand)
Optical Coatings
StarBright XLT
Focuser
Ultra-Stable Focus System (USFS) (target)
Optical Tube Material
Aluminum
Optical Tube Length
838.2mm (33") (ruler)
Optical Tube Weight
43 lbs (19.5 kg) (weight)
Mounting Dovetail
CGE Dovetail Bar
Back Focus
55mm (2.16") with included adapter (compass)
Astrograph Key FeaturesEngineered for Ultimate Deep Sky Imaging
Fast Optical Systemf/2.2 focal ratio enables dramatically shorter exposure times
Rare-Earth Optics4-element design eliminates coma, false color, and field curvature
Sensor Coverage43.3mm optimized image circle supports large format astronomical sensors
Ultra-Stable Focus SystemMinimizes mirror shift and lateral image displacement during focus
Integrated MagLev Fan12V DC cooling fan with dust filters accelerates cooldown time
Included AdaptersT-thread and M48 camera adapters included for easy connectivity
Frequently Asked QuestionsEverything you need to know
What camera adapters are included with the Celestron 11" Rowe-Ackermann Schmidt Astrograph (RASA 11) V2?
The RASA 11 V2 includes standard T-thread and M48 camera adapters, allowing easy attachment to popular DSLR and dedicated astronomical CCD or CMOS cameras.
Why is the Celestron 11" Rowe-Ackermann Schmidt Astrograph (RASA 11) V2 faster than standard telescopes?
With its fast f/2.2 optical system and short 620mm focal length, the RASA 11 V2 gathers light exponentially faster than standard f/10 systems, allowing significantly shorter sub-exposure times and reducing tracking demands on your equatorial mount.
Does the Celestron 11" Rowe-Ackermann Schmidt Astrograph (RASA 11) V2 support motorized focusers?
Yes, the integrated Ultra-Stable Focus System (USFS) on the RASA 11 V2 is fully compatible with optional motorized focusers like the Celestron Focus Motor.
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